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Derk Kooi

@derkkooi

Senior Researcher @ Microsoft Research AI for Science Bestuurslid @kwakzalverij.nl Rabbit fan Lost quantum chemist working in AI Views are my own and do not necessarily reflect those of my employer!

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08.12.2023
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Latest posts by Derk Kooi @derkkooi

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GitHub - microsoft/skala: Skala exchange-correlation functional Skala exchange-correlation functional. Contribute to microsoft/skala development by creating an account on GitHub.

Skala community edition update: GPU4PySCF support is in βœ…

That means Skala can plug into GPU-accelerated PySCF DFT workflows via GPU4PySCF (API-compatible with PySCF).

Install docs are in the repo README: github.com/microsoft/sk...

#DFT #PySCF #GPU #GPU4PySCF #CompChem

27.01.2026 08:54 πŸ‘ 7 πŸ” 6 πŸ’¬ 1 πŸ“Œ 0

This week I will be in Lausanne for Psi-K. Any bluesky tweeps around? πŸ˜„

25.08.2025 06:57 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Come join our wonderful team!

08.07.2025 16:48 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Interested in our mission to make DFT more accurate and push what’s possible in quantum chemistry? Do you want to directly contribute? We're hiring a senior software engineer and a senior researcher:

jobs.careers.microsoft.com/global/en/jo...

jobs.careers.microsoft.com/global/en/jo...

08.07.2025 10:44 πŸ‘ 18 πŸ” 7 πŸ’¬ 0 πŸ“Œ 2
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πŸš€ After two+ years of intense research, we’re thrilled to introduce Skala β€” a scalable deep learning density functional that hits chemical accuracy on atomization energies and matches hybrid-level accuracy on main group chemistry β€” all at the cost of semi-local DFT βš›οΈπŸ”₯πŸ§ͺ🧬

18.06.2025 11:24 πŸ‘ 72 πŸ” 25 πŸ’¬ 3 πŸ“Œ 7
Look Around You: Season 1 Pilot - Calcium
Look Around You: Season 1 Pilot - Calcium YouTube video by DocShadow660

Look Around You is still one of my favourite comedy bits.

Watch the pilot on Calcium and see if we share the same humor: youtu.be/FBaVwwuErmU

05.01.2025 20:39 πŸ‘ 2 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Just received word that Boltzmann is still trapped in the coffee corner.

15.12.2024 12:11 πŸ‘ 6 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Alles Gute zum Geburtstag! At least if my German is not horribly off.

02.12.2024 10:06 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I'm curious to know if anybody has done a comparison of the performance of torch.autograd and torch.func regarding speed, memory usage and so on. I like torch.func a lot, but it won't be so easy to convince others without showing (at least) equivalence.

02.12.2024 10:04 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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a cartoon snail with a red shell is sitting on a sidewalk . Alt: a cartoon snail with a red shell is waving to you.

Add another zero if it also does multi reference?

24.11.2024 08:46 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Beautiful, this asks for a "don't talk to me or my son ever again" meme.

23.11.2024 10:38 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I should buy that book. πŸ€”

21.11.2024 09:16 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Yes, this I absolutely agree with. The data isn't there to learn this. In a way this experiment is weird in that one usually tries to generalize from less to more atoms and not the other way round.

18.11.2024 16:06 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

It has a more complicated PES in the equilibrium region, but I wouldn't call that less smooth, I think. A simple MLP of the internuclear distance would easily fit it in any case. The question is if that's the case for the MLIP models as well, though.

18.11.2024 16:05 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Cr2 is hard from the quantum chemistry perspective, but is it the same from a force field perspective? Sure there is this weird decay, but a function of R is a function of R.

18.11.2024 00:16 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I guess the issue here is that if you train on MD data, which I think is usually the case (?), one simply doesn't see these distances. Perhaps systematically exploring also high energy regions in the PES could alleviate this?

17.11.2024 13:51 πŸ‘ 5 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

"Overgangsfase"? Dit was in the good old days sowieso veel normaler, met één app posten op alle sociale media.

17.11.2024 11:54 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Waarvoor dank.

17.11.2024 11:13 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Too dark? I don't know what the level of darkness tolerated on bluesky is yet.

16.11.2024 18:59 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

It's also similar to children in the sense that it's hard to erase if you made a mistake.

16.11.2024 18:59 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

Right, but NVIDIA essentially provides only a C++ API, so it still matters how well that was tied into the other language, no?

16.11.2024 17:22 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

From what I saw it's not great for GPU programming, am I correct in that?

16.11.2024 17:13 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Okay, that's fine, but only if it's in a 6-31G* basis and not an orbital more.

16.11.2024 16:46 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I've tried to get this point across multiple times, but usually failed at the "but CCSD(T) has an underlying wave function" argument. If only I could have those arguments again!

16.11.2024 16:45 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

In this post-truth era we simply decide it to be correct. Repeat after me: CCSD(T) is the gold standard of quantum chemistry, CCSD(T) is the gold standard of quantum chemistry, CCSD(T) is the gold standard of quantum chemistry.

16.11.2024 16:43 πŸ‘ 3 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

Frederick's adorable!

16.11.2024 16:02 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0